Home > Problems > 9×9 life and death problem

9×9 life and death problem

White to play. Can white kill black?

This came up today in a 9×9 game between Bryan and Thomas. Is black alive, or can white kill?

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  1. Haru(Seung Jin Lee)
    October 25, 2010 at 3:21 am

    This group is alive. Having 1 more liberty and black’s stone at 1 by 5 helpts a lot.

  2. Anbo
    October 25, 2010 at 4:04 am

    alive, white extend, black 22.
    I think black extending also works, but I am not sure if I have covered all the variations there.

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